feat: add WSL and Docker support for file location opening

- Add WSL detection and Windows path conversion using wslpath
- Add Docker/Kubernetes detection via /.dockerenv and /proc/1/cgroup
- Implement clipboard fallback for containerized environments
- Update open_file_location handler to detect WSL/Docker before POSIX
- Update open_settings_location handler with same detection logic
- Add clipboard API integration with graceful fallback in frontend
- Add translations for clipboard feature across all 10 languages
- Add unit tests for _is_wsl(), _is_docker(), and _wsl_to_windows_path()

Fixes file manager opening failures in WSL and Docker environments.

locales/zh-TW.json

@@ -233,7 +233,9 @@
             "label": "開啟設定資料夾",
             "tooltip": "開啟包含 settings.json 的資料夾",
             "success": "已開啟 settings.json 資料夾",
-            "failed": "無法開啟 settings.json 資料夾"
+            "failed": "無法開啟 settings.json 資料夾",
+            "copied": "設定路徑已複製到剪貼簿：{{path}}",
+            "clipboardFallback": "設定路徑：{{path}}"
         },
         "sections": {
             "contentFiltering": "內容過濾",
@@ -895,7 +897,9 @@
             },
             "openFileLocation": {
                 "success": "檔案位置已成功開啟",
-                "failed": "開啟檔案位置失敗"
+                "failed": "開啟檔案位置失敗",
+                "copied": "路徑已複製到剪貼簿：{{path}}",
+                "clipboardFallback": "路徑：{{path}}"
             },
             "metadata": {
                 "version": "版本",
@@ -1531,4 +1535,4 @@
             "learnMore": "LM Civitai Extension Tutorial"
         }
     }
-}
+}